Cleaning scraping strip and cleaning robot

ABSTRACT

The cleaning scraping strip includes a connecting portion, the connecting portion has a first end and a second end, and the first end of the connecting portion is installed on the bottom of the cleaning robot; and a working portion, wherein the working portion has a first end and a second end, the first end of the working portion is connected to the second end of the connecting portion, and the second end of the working portion is configured to contact the ground; a connection between the first end of the working portion and the second end of the connecting portion defines a notch, and the notch is arranged on the side of the connection away from the advancing direction of the cleaning robot, the working portion is bendable along the notch so that at least part of the working portion abuts against the connecting portion.

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims the priority of the Chinese patent application with application NO. 202110347092.0 filed at the China National Intellectual Property Administration on Mar. 31, 2021, the entire content of which is incorporated into the present application by reference.

TECHNICAL FIELD

The application relates to the technical field of intelligent cleaning equipment, and particularly relates to a cleaning scraping strip and a cleaning robot.

BACKGROUND

In the existing cleaning robot, the scraping strip is usually arranged at the bottom of the housing of the cleaning robot, behind the cleaning element of the cleaning robot. Since the ground is not flat, for example, for the tile ground, there are joints between the tiles and the tiles, similarly, for the wooden ground, there are also joints between the boards and the boards, during the cleaning process, the scraping strip is easy to be stuck at the joint, and the scraping strip cannot cross the joint. When the scraping strip is forced to cross the joint, the scraping strip will bounce and no longer stick to the ground, which will cause liquid and garbage to remain on the ground, affecting the recovery rate of waste water and garbage.

SUMMARY

The purpose of the present application is to provide a cleaning scraping strip and a cleaning robot, which aims to solve the problem of scraping waste water or garbage on an unclean ground by using a scraping strip on a cleaning robot in the exiting technology.

In order to achieve the above-mentioned purpose, the technical solution adopted by the present application is: a cleaning scraping strip for cleaning robot, including: a connecting portion, wherein the connecting portion has a first end and a second end, and the first end of the connecting portion is configured to be installed on the bottom of the cleaning robot; and a working portion, wherein the working portion has a first end and a second end, the first end of the working portion is connected to the second end of the connecting portion, and the second end of the working portion is configured to contact the ground; a connection between the first end of the working portion and the second end of the connecting portion defines a notch, and the notch is arranged on the side of the connection away from the advancing direction of the cleaning robot, the working portion is bendable along the notch so that at least part of the working portion abuts against the connecting portion.

Optionally, a distance from an edge of the notch of the working portion to the bottom of the notch in the horizontal direction is a notch depth B, and a distance from an edge of the notch of the working portion to the surface of the connecting portion in the vertical direction is the notch width D, then 0.45≤B/D≤0.7.

Optionally, a thickness of the connection along the horizontal direction is C, 0.5 mm≤C≤1.5 mm.

Optionally, a height of the working portion from a first end to a second end in the vertical direction is defined as A, and the height A is greater than or equal to a ground clearance of the cleaning robot by 0.5 mm and the height A is less than or equal to a ground clearance of the cleaning robot by 1.5 mm.

Optionally, an acute angle is formed between the length of the working portion and the ground.

Optionally, the connecting portion includes a connecting head section and a transition section, a first end of the connecting head section is installed at a bottom of the cleaning robot, and a second end of the connecting head section is connected to a first end of the transition section, a second end of the transition section is connected to a first end of the working portion, and the transition section extends obliquely downward in the advancing direction of the cleaning robot.

Optionally, the connecting head section, the transition section and the working portion are integrally formed with flexible materials.

Optionally, at least one force-bearing step for bearing the force exerted by the cleaning robot is formed on the transition section and/or the connecting head section, and the force-bearing step is provided on one side of the transition section and/or the connecting head section away from the advancing direction of the cleaning robot.

According to another aspect of the present application, a cleaning robot is provided. Specifically, the cleaning robot includes a housing and the aforementioned cleaning scraping strip, an inner cavity is provided on the housing, the cavity wall of the inner cavity is provided with an installation position, the first end of the connecting portion is connected and fixed on the installation position, and the working portion extends out of the inner cavity to contact the ground.

Optionally, the cleaning robot also includes a cleaning element. The cleaning element is arranged on the housing, and the cleaning element is configured to clean the ground, in the advancing direction of the cleaning robot, the cleaning scraping strip is located behind the cleaning element.

Optionally, an inner cavity is provided on the housing; the cleaning member is a rolling brush, and the rolling brush is arranged in the inner cavity and extends out of the inner cavity to scrub the ground, one side of the cleaning scraping strip facing the rolling brush is arranged as an arc-shaped surface that matches the outer contour of the rolling brush, and the cleaning scraping strip and the rolling brush are arranged at interval.

Optionally, the cleaning robot further includes a force-bearing member, the force-bearing member is installed on the cavity wall of the inner cavity, and one side of the cleaning scraping strip facing away from the cleaning member abuts against the force-bearing member.

The present application has at least the following beneficial effects:

The cleaning scraping strip provided by the present application is configured for assembly on the cleaning robot, and the first end of the connecting portion of the cleaning scraping strip is connected and fixed to the corresponding installation position of the cleaning robot. The second end of the working portion of the cleaning scraping strip extends out of the bottom of the cleaning robot to contact the ground. In the process of cleaning the ground, after the ground is mopped, some waste water will remain on the ground, and some garbage will not be cleaned completely. Because of the cleaning scraping strip, the remaining waste water and garbage will be scraped away. When the notch is squeezed and shrunk when the working portion encounters an external obstacle, when the edge of the notch of the working portion at least partially abuts on the surface of the connecting portion, the working portion is bent backward by the maximum arc at this time, and the working portion does not continue to bend, and use the reaction force of the connecting portion to the working portion to press against the ground while surpassing the external obstacles, so that the working portion will not bounce from the ground, thereby scraping the ground clean.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solutions in the embodiments of the present application more clearly, the following will briefly introduce the drawings that need to be configured in the description of the embodiments or the exiting technology. Obviously, the drawings in the following description are merely for some embodiments of the present application. Those of ordinary skill in the art can obtain other drawings based on these drawings without creative labor.

FIG. 1 is a schematic diagram of the cross-sectional structure of the cleaning scraping strip in the first embodiment of the present application in a normal state;

FIG. 2 is a schematic diagram of the cross-sectional structure of the cleaning scraping strip in the first embodiment of the present application in a barrier-crossing state;

FIG. 3 is a schematic diagram of the annotation structure of the cleaning scraping strip in the first embodiment of the present application;

FIG. 4 is a schematic diagram of the cross-sectional structure of the cleaning scraping strip in the second embodiment of the present application in a normal state;

FIG. 5 is a front view of a cleaning robot provided by an embodiment of the present application;

FIG. 6 is a schematic diagram of the ground structure of a cleaning robot provided by an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of the relative assembly position between the cleaning scraping strip and the cleaning element in the cleaning robot provided by an embodiment of the present application;

FIG. 8 is an enlarged view of F in FIG. 7.

The reference signs in the figure are as following:

-   -   100, cleaning scraping strip; 10, connecting head section; 20,         transition section; 21, force-bearing step; 30, working portion;         40, connection; 41, notch; 200, cleaning robot; 210, housing;         211, installation position; 212, inner cavity; 220, cleaning         element; 230, force-bearing member; 240, driving wheel; and 250,         universal wheel.

DETAILED DESCRIPTION

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals indicate the same or similar elements or portions with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present application, but should not be construed as limiting the present application.

In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms of “length”, “width”, “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, “outer”, etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, does not indicate or imply that the pointed device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application.

In addition, the terms of “first”, “second”, etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined with “first”, “second”, etc. may explicitly or implicitly include one or more of these features. In the description of the present application, “a plurality of” means two or more, unless otherwise specifically defined.

In the present application, unless otherwise clearly specified and limited, the terms of “installed”, “connecting”, “connected”, “fixed” and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to specific circumstances.

Definition description: As shown in FIG. 3, the plane rectangular coordinate system XOY, when the cleaning scraping strip is installed and stabilized on the cleaning robot, the plane rectangular coordinate system XOY is established, and the cross section of the cleaning scraping strip along the cleaning robot advancing direction is parallel to the rectangular coordinate system XOY, the direction parallel to X axis of the rectangular coordinate system XOY is defined as the horizontal direction, and the direction parallel to the Y axis of the rectangular coordinate system XOY of the plane is defined as the vertical direction.

As shown in FIGS. 1-3, the first embodiment of the present application provides a cleaning scraping strip 100, which is configured to be assembled at the rear end of the cleaning element 220 of the cleaning robot 200. During the cleaning of the ground by the cleaning robot 200, the cleaning robot 200 walks on the ground, and the place it passes by is cleaned by the cleaning element 220. However, there will be some waste water or garbage residue on the ground after the cleaning element 220 is cleaned. In such condition, the residual waste water or garbage can be scraped away by the cleaning scraping strip 100. Specifically, the cleaning scraping strip 100 includes a connecting portion and a working portion 30. The connecting portion has a first end and a second end. The first end of the connecting portion is configured to be installed at the bottom of the cleaning robot 200 (that is, the first end of the connecting portion is connected and fixed at the installation position 211 of the cleaning robot 200). Similarly, the working portion 30 also has a first end and a second end. The first end of the working portion 30 is connected to the second end of the connecting portion, and the second end of the working portion 30 is configured to contact the ground. A notch 41 is provided at the connection 40 between the first end of the working portion 30 and the second end of the connecting portion. The notch 41 is located on the side of the connection 40 away from the advancing direction of the cleaning robot 200. In the advancing direction of the cleaning robot 200, when the working portion 30 encounters an external obstacle, the working portion 30 can be bent along the notch 41 so that at least part of the working portion 30 abuts on the connecting portion.

Furthermore, the connecting portion of the cleaning scraping strip 100 includes a connecting head section 10 and a transition section 20. The first end of the connecting head section 10 is configured for installation at the bottom of the cleaning robot 200 (that is, the first end of the connecting head section 10 is connected and fixed on the installation position 211 of the cleaning robot 200), so that the entire cleaning scraping strip 100 can be stably installed on the cleaning robot 200. The first end of the transition section 20 is connected to the second end of the connecting head section 10, the second end of the transition section 20 extends to the bottom of the cleaning robot 200. An obtuse angle is formed between the length extension direction of the transition section 20 and the advancing direction of the cleaning robot 200 (that is, the transition section 20 extends obliquely downward in the advancing direction of the cleaning robot 200). The first end of the working portion 30 is connected to the second end of the transition section 20, and the second end of the working portion 30 is configured to abut the ground.

After assembling the cleaning scraping strip 100 to the housing 210, as shown in FIG. 3, the working portion 30 of the cleaning scraping strip 100 has a height A from the first end to the second end in the vertical direction, and the height of the working portion from a first end to a second end in the vertical direction is defined as A, and the height A is greater than or equal to a ground clearance of the cleaning robot by 0.5 mm and the height A is less than or equal to a ground clearance of the cleaning robot by 1.5 mm (the height A is greater than the distance between the bottom of the cleaning robot 200 and the horizontal floor, by no more than 1.5 mm), such as by 0.5 mm, 0.8 mm, 1.0 mm, 1.2 mm, and 1.5 mm, so that when the cleaning robot 200 is placed on the ground, the second end of the working portion 30 contacts the ground. In such case, the working portion 30 is squeezed by the ground and pre-tensioned, so that it can tightly abut on the ground.

The cleaning scraping strip 100 provided by the present application is used for assembly on the cleaning robot 200, and the first end of the connecting head section 10 of the cleaning scraping strip 100 is connected and fixed to the corresponding installation position 211 of the cleaning robot 200. The second end of the working portion 30 of the cleaning scraping strip 100 extends out of the cleaning robot 200. The bottom is in contact with the ground. In the process of cleaning the ground, after the cleaning element 220 wipes the ground, some water in the moist cleaning element 220 will remain on the ground, and some garbage will not be cleaned completely. Because the cleaning scraping strip 100 assembly is located behand the cleaning element 220, so as to scrape away the remaining waste water and garbage. When the notch 41 of the working portion 30 is squeezed and shrunk when the working portion 30 encounters an external obstacle, when the edge of the notch 41 of the working portion 30 at least partially abuts on the surface of the transition section 20, the working portion 30 is bent backward by the maximum arc at this time, and the working portion 30 does not continue to bend and use the reaction force of the transition section 20 to the working portion 30 to press against the ground while surpassing the external obstacles, so as to scrape the ground clean.

In the first embodiment, an acute angle is formed between the length extension direction of the working portion 30 and the ground (the acute angle formed by the working portion 30 and the ground opens toward the advancing direction of the cleaning robot 200). Specifically, the notch 41 is squeezed and shrunk when the working portion 30 encounters an external obstacle, so that the working portion 30 can smoothly avoid the external obstacle and continue to scrape the ground forward. As shown in FIG. 3, the distance from the edge of notch 41 of working portion 30 to the bottom of notch 41 in the horizontal direction is notch depth B (take the maximum depth), and the distance from the edge of notch 41 of working portion 30 to the surface of transition section 20 in the vertical direction is notch width D (take the maximum width), then 0.45≤B/D≤0.7. In addition, the horizontal thickness of the connection 40 between the working portion 30 and the transition section 20 is 0.5 mm to 1.5 mm, as shown in FIG. 3, for example, the thickness is equal to 0.5 mm, 0.8 mm, 1.0 mm, 1.2 mm, and 1.5 mm.

Preferably, the connecting head section 10, the transition section 20, and the working portion 30 of the cleaning scraping strip 100 of the first embodiment are integrally formed with flexible materials. It is preferable to use rubber, silica gel, and other materials with suitable softness and hardness for integral injection molding.

As shown in FIGS. 1-3, in order to ensure that the cleaning scraping strip 100 installed on the housing 210 can always maintain a stable assembly during the forwarding process of the cleaning robot, and avoid the occurrence of offset, therefore, the transition section 20 and/or the connecting head section 10 are formed with at least one force-bearing step 21 that bears the force exerted by the cleaning robot 200 is provided on the side of the transition section 20 and/or the connecting head section 10 that is away from the cleaning robot 200 advancing direction. In fact, the connection between the transition section 20 and the connecting head section 10 is arranged in a turning shape to become a force-bearing step 21, and a force-bearing step 21 is provided in the middle of the transition section 20.

As shown in FIG. 4, it shows a schematic diagram of the structure of cleaning scraping strip 100 according to the second embodiment of the present application. Compared with the cleaning scraping strip 100 of the first embodiment, the cleaning scraping strip 100 of the second embodiment has the following differences. In the second embodiment, the connecting head section 10, the transition section 20 and the working portion 30 of the cleaning scraping strip 100 are three independent components, which are prefabricated respectively, and then the first end of the transition section 20 is connected to the connecting head section 10, and then the working portion 30 is connected to the second end of the transition section 20, so as to assemble into a complete cleaning scraping strip. In addition, the connecting head section 10 and the transition section 20 can be made of rigid hard materials, such as iron, aluminum, etc., or they can be made of flexible materials, while the working portion 30 must be made of flexible materials. In addition, in other feasible embodiments, the connecting portion composed of the connecting head section 10 and the transition section 20 is manufactured by integral molding of the same material, while the working portion 30 is still a separate independent component, which combines the first end of the working portion 30 and the second end of the transition section 20 to assemble into a complete cleaning scraping strip 100.

Compared with the cleaning scraping strip 100 of the first embodiment, the cleaning scraping strip 100 of the second embodiment has the same structure except for the above structure, so it is not repeated here.

According to another aspect of the present application, a cleaning robot 200 is provided, as shown in FIG. 5-FIG. 8, which show schematic diagrams of the structure of the cleaning robot 200. Specifically, the cleaning robot 200 includes a housing 210, a cleaning element 220, and the aforementioned cleaning scraping strip 100. The cleaning element 220 is assembled on the housing 210. In fact, the cleaning element 220 can be a mop (this is a mopping robot), and the cleaning element 220 can also be a broom (this is a sweeping robot), the cleaning robot 200 of the present application preferably uses the cleaning element 220 as a broom. The housing 210 is formed with an inner cavity 212, the cavity wall of the inner cavity 212 is provided with an installation position 211, the connecting head section 10 is connected and fixed to the installation position 211, and the working portion 30 extends out of the inner cavity 212. In the advancing direction of the cleaning robot 200, the cleaning scraping strip 100 is located behind the cleaning element 220.

The cleaning scraping strip 100 provided by the present application is used for assembly on the cleaning robot 200, and the first end of the connecting head section 10 of the cleaning scraping strip 100 is connected and fixed to the corresponding installation position 211 of the cleaning robot 200. The second end of working portion 30 of the cleaning scraping strip 100 extends out of the bottom of the cleaning robot 200 to contact ground, in the process of cleaning the ground, after the cleaning element 220 wipes the ground, some water in the wet cleaning element 220 will remain on the ground, and some garbage will not be cleaned completely. The cleaning scraping strip 100 is installed behind the cleaning element 220, thereby scraping away the remaining waste water and garbage. In the process of notch 41 being squeezed and shrunk when the working portion 30 encounters an external obstacle, when the edge of the notch 41 of the working portion 30 abuts on the surface of the transition section 20, then the working portion 30 is bent backward by the maximum arc at this time, and the working portion 30 does not continue to bend. While crossing the external obstacles, the reaction force of the transition section 20 on the working portion 30 is configured to press against the ground, thereby scraping the ground clean.

As shown in FIG. 6, the cleaning element 220 is a rolling brush (a rolling brush can be a mop surface to mop the ground, or a brush surface to sweep the ground). The rolling brush is assembled in the inner cavity 212 and the inner cavity 212 is extended to roll the ground. The side of the rolling brush facing the cleaning scraping strip 100 is arranged as an arc-shaped surface that matches the outer contour of the rolling brush, and the cleaning scraping strip 100 and the rolling brush are arranged at intervals. Driving wheels 240 are respectively provided near the two ends of the rolling brush, and forward power is provided by the driving wheels 240, and a universal wheel 250 is provided at the front end of the housing 210 of the advancing direction. When a speed difference occurs between the two driving wheels 240, the universal wheel 250 automatically adjusts the direction to steer according to the speed difference.

As shown in FIGS. 7 and 8, the cleaning robot 200 also includes a force-bearing member 230, the force-bearing member 230 is installed on the cavity wall of the inner cavity 212, and the side of the cleaning scraping strip 100 away from the cleaning element 220 abuts on the force-bearing member 230. On the cleaning scraping strip, the connection between the transition section 20 and the connecting head section 10 is arranged in a turning shape to become a force-bearing step 21, and a force-bearing step 21 is arranged in the middle of the transition section 20. Correspondingly, two matching steps are provided on the force-bearing member 230 corresponding to the two force-bearing steps 21, and the two force-bearing steps 21 respectively engage and abut against the two matching steps. In this way, the cleaning robot 200 moves forward. During the process, the force-bearing member 230 exerts force on the cleaning scraping strip 100, so that the cleaning scraping strip 100 is stable without shifting.

According to another aspect of the present application, a cleaning system (not shown) is provided. Specifically, the cleaning system includes a cleaning base station (not shown) and the aforementioned cleaning robot 200. The cleaning base station is configured to clean the cleaning element 220 of the cleaning robot 200. After the cleaning robot 200 completes the cleaning of the ground, the cleaning base station is configured for accommodating cleaning robot 200. In fact, the cleaning base station can also be configured to clean the cleaning element 220 of the cleaning robot 200, because the ground area cannot be cleaned by the cleaning robot 200 at one time. The cleaning robot 200 needs to go back and forth to clean the base station multiple times, and each time it enters the clean base station, the base station is cleaned. The cleaning element 220 will be cleaned, and then the cleaning robot 200 will leave the cleaning base station again and continue to clean the ground, and so on, until the cleaning robot 200 completely cleans the ground.

Unless otherwise indicated, the numerical ranges involved in the present application include the end values. The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be within the protection scope of the present application. 

What is claimed is:
 1. A cleaning scraping strip for a cleaning robot, comprising: a connecting portion, wherein the connecting portion has a first end and a second end, and the first end of the connecting portion is configured to be installed on a bottom of the cleaning robot; and a working portion, wherein the working portion has a first end and a second end, the first end of the working portion is connected to the second end of the connecting portion, and the second end of the working portion is configured to contact a ground; wherein a connection between the first end of the working portion and the second end of the connecting portion defines a notch, and the notch is arranged on a side of the connection away from a advancing direction of the cleaning robot, the working portion is bendable along the notch so that at least part of the working portion abuts against the connecting portion.
 2. The cleaning scraping strip according to claim 1, wherein a distance from an edge of the notch of the working portion to a bottom of the notch in a horizontal direction is defined as a notch depth B, a distance from an edge of the notch of the working portion to a surface of the connecting portion in a vertical direction is defined as a notch width D, and 0.45≤B/D≤0.7.
 3. The cleaning scraping strip according to claim 1, wherein a thickness of the connection along a horizontal direction is defined as C, and 0.5 mm≤C≤1.5 mm.
 4. The cleaning scraping strip according to claim 1, wherein a height of the working portion from a first end to a second end in a vertical direction is defined as A, and the height A is greater than or equal to a ground clearance of the cleaning robot by 0.5 mm and the height A is less than or equal to a ground clearance of the cleaning robot by 1.5 mm.
 5. The cleaning scraping strip according to claim 1, wherein an acute angle is formed between a length extension direction of the working portion and the ground.
 6. The cleaning scraping strip according to claim 1, wherein the connecting portion comprises a connecting head section and a transition section; a first end of the connecting head section is installed at a bottom of the cleaning robot, a second end of the connecting head section is connected to a first end of the transition section, a second end of the transition section is connected to a first end of the working portion, and the transition section extends obliquely downward in the advancing direction of the cleaning robot.
 7. The cleaning scraping strip according to claim 6, wherein the connecting head section, the transition section and the working portion are integrally formed with a flexible material.
 8. The cleaning scraping strip according to claim 6, wherein at least one force-bearing step for bearing a force exerted by the cleaning robot is formed on the transition section and/or the connecting head section, and the force-bearing step is arranged at a side of the transition section and/or the connecting head section away from the advancing direction of the cleaning robot.
 9. A cleaning robot, comprising a housing and the cleaning scraping strip according to claim 1, wherein the cleaning scraping strip is installed at a bottom of the housing.
 10. The cleaning robot according to claim 9, further comprising a cleaning element, wherein the cleaning element is arranged on the housing and configured to clean the ground; and in the advancing direction of the cleaning robot, the cleaning scraping strip is located behind the cleaning element.
 11. The cleaning robot according to claim 10, wherein an inner cavity is defined in the housing; the cleaning element is a rolling brush, and the rolling brush is arranged in the inner cavity and extends out of the inner cavity to scrub the ground; a side of the cleaning scraping strip facing the rolling brush is configured as an arc-shaped surface that matches an outer contour of the rolling brush; and the cleaning scraping strip and the rolling brush are spaced apart from each other.
 12. The cleaning robot according to claim 11, further comprising a force-bearing member, wherein the force-bearing member is installed at a cavity wall of the inner cavity, and a side of the cleaning scraping strip facing away from the cleaning member abuts against the force-bearing member. 